Page 21 of 3833
HOW TO USE THIS MANUAL
GI-19
C
D
E
F
G
H
I
J
K
L
MB
GI
Detectable Lines and Non-Detectable Lines
In some wiring diagrams, two kinds of lines, representing wires, with different weight are used.
●A line with regular weight (wider line) represents a “detectable
line for DTC (Diagnostic Trouble Code)”. A “detectable line for
DTC” is a circuit in which ECM can detect its malfunctions with
the on board diagnostic system.
●A line with less weight (thinner line) represents a “non-detect-
able line for DTC”. A “non-detectable line for DTC” is a circuit in
which ECM cannot detect its malfunctions with the on board
diagnostic system.
Multiple Switch
The continuity of multiple switch is described in two ways as shown below.
●The switch chart is used in schematic diagrams.
SGI862-B
Page 291 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual OIL PUMP
LU-11
[QR]
C
D
E
F
G
H
I
J
K
L
MA
LU
●Measure clearance with feeler gauge and straightedge.
Side clearance between inner rotor and oil pump body (position
3).
Side clearance between outer r NISSAN X-TRAIL 2001 Service Repair Manual OIL PUMP
LU-11
[QR]
C
D
E
F
G
H
I
J
K
L
MA
LU
●Measure clearance with feeler gauge and straightedge.
Side clearance between inner rotor and oil pump body (position
3).
Side clearance between outer r](/manual-img/5/57405/w960_57405-290.png)
OIL PUMP
LU-11
[QR]
C
D
E
F
G
H
I
J
K
L
MA
LU
●Measure clearance with feeler gauge and straightedge.
Side clearance between inner rotor and oil pump body (position
3).
Side clearance between outer rotor and oil pump body (position
4).
●Calculate the clearance between inner rotor and oil pump body
as follows.
1. Measure the outer diameter of protruded portion of inner rotor
(Position 5).
2. Measure the inner diameter of oil pump body with inside
micrometer (Position 6).
(Clearance) = (Inner diameter of oil pump body) – (Outer diame-
ter of inner rotor)
Regulator Valve Clearance
(Clearance) = D1 (Valve hole diameter) – D2 (Outer diameter of
valve)
CAUTION:
●Coat regulator valve with engine oil.
●Check that it falls smoothly into the valve hole by its own
weight.Standard: 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Standard: 0.060 - 0.110 mm (0.0024 - 0.0043 in)
PBIC0252E
PBIC0253E
Standard: 0.035 - 0.070mm (0.0014 - 0.0028 in)
PBIC0254E
Standard: 0.040 - 0.097 mm (0.0016 - 0.0038 in)
KBIA0043E
Page 304 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual LU-24
[YD22DDTi]
OIL PUMP
●Calculate the clearance between inner rotor and oil pump hous-
ing as follows.
1. Measure the outer diameter of protruded portion of inner rotor
(Position 5)
2. M NISSAN X-TRAIL 2001 Service Repair Manual LU-24
[YD22DDTi]
OIL PUMP
●Calculate the clearance between inner rotor and oil pump hous-
ing as follows.
1. Measure the outer diameter of protruded portion of inner rotor
(Position 5)
2. M](/manual-img/5/57405/w960_57405-303.png)
LU-24
[YD22DDTi]
OIL PUMP
●Calculate the clearance between inner rotor and oil pump hous-
ing as follows.
1. Measure the outer diameter of protruded portion of inner rotor
(Position 5)
2. Measure the inner diameter of oil pump housing with inside
micrometer (Position 6)
(Clearance) = (Inner diameter of oil pump housing) – (Outer
diameter of inner rotor)
Regulator Valve
1. Visually inspect components for wear and damage.
2. Check oil pressure regulator valve sliding surface and valve spring.
3. Coat regulator valve with engine oil. Check that it falls smoothly into the valve hole by its own weight.
If damaged, replace regulator valve set or oil pump housing.
4. Check regulator valve to oil pump housing clearance.
CAUTION:
Coat regulator valve with engine oil.
ASSEMBLY
●Assemble in the reverse order of disassembly.
●Install the inner rotor and outer rotor with the punched marks on
the oil pump cover side.
●After warming up the engine, check for oil leakage and oil level.
Refer to LU-18, "
ENGINE OIL" .
PBIC0253E
Standard : 0.045 - 0.091mm (0.0018 - 0.0036 in)
SBIA0124E
Clearance "6":
0.040 - 0.097 mm (0.0016 - 0.0038 in)
JLC358B
JLC286B
Page 429 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-79
[QR25(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
(continued on next page)
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE ST NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-79
[QR25(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
(continued on next page)
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE ST](/manual-img/5/57405/w960_57405-428.png)
TROUBLE DIAGNOSIS
EC-79
[QR25(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
(continued on next page)
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank
5
5FL-9
Fuel piping 5 5 5 5 5 5FL-3,EM-
32
Vapor lock—
Valve deposit
555555 5—
Poor fuel (Heavy weight gaso-
line, Low octane)—
Air Air duct
55555 5EM-14
Air cleanerEM-14
Air leakage from air duct
(Mass air flow sensor —electric
throttle control actuator)
5555EM-14
Electric throttle control actuatorEM-16
Air leakage from intake manifold/
Collector/GasketEM-16
Cranking Battery
111111 11SC-3
Alternator circuitSC-12
Starter circuit 3SC-20
Signal plate 6EM-73
PNP switch
4MT-12 or
AT- 11 5
Engine Cylinder head
55555 55 5EM-59
Cylinder head gasket 4 3
Cylinder block
66666 66 64
EM-73
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Page 821 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-471
[QR25(WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGIN NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-471
[QR25(WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGIN](/manual-img/5/57405/w960_57405-820.png)
TROUBLE DIAGNOSIS
EC-471
[QR25(WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank
5
5FL-9
Fuel piping 5 5 5 5 5 5FL-3,EM-
32
Vapor lock—
Valve deposit
555555 5—
Poor fuel (Heavy weight gaso-
line, Low octane)—
Air Air duct
55555 5EM-14
Air cleanerEM-14
Air leakage from air duct
(Mass air flow sensor —electric
throttle control actuator)
5555EM-14
Electric throttle control actuatorEM-16
Air leakage from intake manifold/
Collector/GasketEM-16
Cranking Battery
111111 11SC-3
Alternator circuitSC-12
Starter circuit 3SC-20
Signal plate 6EM-73
PNP switch
4MT-12 or
AT-349
Engine Cylinder head
55555 55 5EM-59
Cylinder head gasket 4 3
Cylinder block
66666 66 64
EM-73
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Va l v e
mecha-
nismTiming chain
55555 55 5EM-37
CamshaftEM-46
Intake valve
3EM-59
Exhaust valve
Page 1161 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-811
[QR20(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/F NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-811
[QR20(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/F](/manual-img/5/57405/w960_57405-1160.png)
TROUBLE DIAGNOSIS
EC-811
[QR20(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank
5
5FL-9
Fuel piping 5 5 5 5 5 5FL-3,EM-
32
Vapor lock—
Valve deposit
555555 5—
Poor fuel (Heavy weight gaso-
line, Low octane)—
Air Air duct
55555 5EM-14
Air cleanerEM-14
Air leakage from air duct
(Mass air flow sensor —electric
throttle control actuator)
5555EM-14
Electric throttle control actuatorEM-16
Air leakage from intake manifold/
Collector/GasketEM-16
Cranking Battery
111111 11SC-3
Alternator circuitSC-12
Starter circuit 3SC-20
Signal plate 6EM-73
PNP switch
4MT-12 or
AT- 11 5
Engine Cylinder head
55555 55 5EM-59
Cylinder head gasket 4 3
Cylinder block
66666 66 64
EM-73
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Va l v e
mecha-
nismTiming chain
55555 55 5EM-37
CamshaftEM-46
Intake valve
3EM-59
Exhaust valve
Page 1508 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual EC-1158
[QR20(WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/D NISSAN X-TRAIL 2001 Service Repair Manual EC-1158
[QR20(WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/D](/manual-img/5/57405/w960_57405-1507.png)
EC-1158
[QR20(WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank
5
5FL-9
Fuel piping 555 55 5FL-3,EM-
32
Vapor lock—
Valve deposit
555555 5—
Poor fuel (Heavy weight gaso-
line, Low octane)—
Air Air duct
55555 5EM-14
Air cleanerEM-14
Air leakage from air duct
(Mass air flow sensor —electric
throttle control actuator)
5555EM-14
Electric throttle control actuatorEM-16
Air leakage from intake manifold/
Collector/GasketEM-16
Cranking Battery
111111 11SC-3
Alternator circuitSC-12
Starter circuit 3SC-20
Signal plate 6EM-73
PNP switch
4MT-12 or
AT- 3 4 9
Engine Cylinder head
55555 55 5EM-59
Cylinder head gasket 4 3
Cylinder block
66666 66 64
EM-73
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Va l v e
mecha-
nismTimin g c hain
55555 55 5EM-37
CamshaftEM-46
Intake valve
3EM-59
Exhaust valve
Page 1933 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual FUEL TANK
FL-9
[QR]
C
D
E
F
G
H
I
J
K
L
MA
FL
FUEL TANKPFP:17202
Removal and InstallationEBS00KOW
REMOVAL
WARNING:
Be sure to read “General Precautions” when working on fuel system. Refer to FL-3, NISSAN X-TRAIL 2001 Service Repair Manual FUEL TANK
FL-9
[QR]
C
D
E
F
G
H
I
J
K
L
MA
FL
FUEL TANKPFP:17202
Removal and InstallationEBS00KOW
REMOVAL
WARNING:
Be sure to read “General Precautions” when working on fuel system. Refer to FL-3,](/manual-img/5/57405/w960_57405-1932.png)
FUEL TANK
FL-9
[QR]
C
D
E
F
G
H
I
J
K
L
MA
FL
FUEL TANKPFP:17202
Removal and InstallationEBS00KOW
REMOVAL
WARNING:
Be sure to read “General Precautions” when working on fuel system. Refer to FL-3, "
General Precau-
tions" .
1. Release fuel pressure from fuel line. Refer to EC-775, "
FUEL
PRESSURE RELEASE" [QR20DE (WITH EURO-OBD)], EC-
11 3 9 , "FUEL PRESSURE RELEASE" [QR20DE (WITHOUT
EURO-OBD)], EC-42, "
FUEL PRESSURE RELEASE"
[QR25DE (WITH EURO-OBD)] or EC-452, "FUEL PRESSURE
RELEASE" [QR25DE (WITHOUT EURO-OBD)].
2. Open the fuel filler cap and release the pressure inside the fuel
tank.
3. Remove rear seat bottom.
4. Remove inspection hole cover, harness connector and fuel feed
hose.
5. Drain fuel from fuel tank if necessary. For the draining procedure, refer to Step 4 in removal of FL-4,
"FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .
CAUTION:
For the safety work and to maintain fuel tank gravity at center, drain fuel to the level where fuel
tank weight at left and right becomes equal.
6. Disconnect the quick connector.
●Put mating marks on hoses for correct installation.
PBIC0246E
1. Fuel filler cap 2. Grommet 3. Fuel filler tube
4. Vent hose 5. Vent tube 6. Fuel tank
7. Fuel filler hose 8. Fuel tank band 9. Fuel tank protector
KBIA0280E